The half-life of carbon-14 is approximately 5,700 years. using this information scientists have been able to determine the age of some artifacts left by humans. a scientist wants to know approximately how old a piece of wood was that she found on the floor in an old cave that had recently been discovered. if the wood had gone through 3 half-lives, about how old is the wood?

Which of the following is an example of a tissue on the digestive system a.the stomach b.smooth muscle that lines the stomach c.nerve cells in the stomach d. enzyme molecules in the stomach

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

The cluster of developing cells from conception until birth is called an